Sight for firearms



(No Model.)

F. W. DOBBEL.

SIGHT FOR FIREARMS. No:518,734. Patented Apr. 24, 1894.

MM 7 I f2/ v 1%.

UNITED STATES PATENT OFFICE.

FREDERICK W. DOBBEL, OF SAN FRANCISCO, CALIFORNIA.

SIGHT FOR FIREARMS.

SPECIFICATION forming part of Letters Patent No. 518,734, dated April24,1894. Application filed August 17,1893. Serial No. 483,381. (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK W. DOBBEL, acltizen of the United States,residing in the city and county of San Francisco, State of California,have invented an Improvement in Sights for Firearms; andI hereby declarethe following to be afull, clear, and exact description of the same.

My invention relates to that class of firearm sights, in which the sightis carried bya vertically adjustable stem which is seated in a hollowstandard or barrel pivoted to a base which is secured to the gun.

My invention consists in the novel construction, arrangement andcombination of the parts of the device which I shall hereinafter fullydescribe and specifically claim.

The general object of my invention is to provide a sight having a widerange of adjustment, and which can be easily and accurately operated.

Particular advantages of the several points of construction, whereby thegeneral object is attained will appear in the course of the followingdescription, and by reference to the accompanying drawings, in which-Figure 1 is a front elevation of my sight. Fig. 2 is a vertical sectionof same. Fig. 3 is a view of the toothed face of the disk E.

A is a base which is adapted to be secured to the gun. In this ispivoted and controlled by a spring a in the usual manner, an uprightbarrel or hollow standard .13, open at both ends, and in which is fittedand adapted to slide throughout the whole length thereof, the stem Cwhich carries on its top the sight D. In order to provide fora maximumlength of stem, and the greatest amount of adjustment, it will beobserved that the stem C passes down through the hollow standard orbarrel B throughout its entire length, and in order to avoidinterference therewith, the pivot screws a extend only partially intothe base of the barrel or hollow standard, thereby leaving its interiorfree for the movement and passage of the stem up and down. The

front of the hollow standard or barrel is formed with a bearing-plateI), through the upper portion of which project the teeth c which formthe rack on the front of the .limiting the rotation of the disk.

stem C. To the face of this bearing-plate is fitted a rotary disk E,having a milled rim, whereby it may easily be operated. The innersurface of this disk is formed with teeth 6 which constitute itpractically a pinion, said teeth engaging at the upper portion with theexposed teeth 0 forming the rack of the stem C. Therefore, by rotatingthe pinion disk, the stem C may be raised or lowered as desired. Thispinion disk is secured to the bearing plate by means of ascrew F, underthe head of which is confined awasher G, the upper portion of which isformed into a pointer g, and the lower portion is formed into a springfinger 9 having on the under surface of its extremityasmallpin 9 Uponthe face of the pinion disk are delineated in suitable manner numbersbeginning say, with zero, and continuing around the disk, here shown asending with the number 5, and these numbers are at gradually increasingdistances from each other, as they represent, beginning with the zerothe point blank range, or up to fifty yards, and then the one hundredyards, the two hundred yards, and so on up to five hundred yards, theirincreasing distances being rendered necessary by the differentelevations required for the difierent ranges. Around the face of the rimof the disk diametrically opposite each number, and divisions thereof,are the small sockets it, into which the pin 9 on the under side of thespring finger g is adapted to successively click as the pinion disk isrotated. Beside the zero socket of the disk is a pin H which is adaptedto come in contact with the edge of the spring finger g, and to form astop The figures on the disk are so placed that when the zero isuppermost, and the pointer g of the washer is directed toward it, thesight stern will be down to its lowermost limit. Now, to raise it to thehundred yards range, the pinion is turned until the figure 1 comesopposite the pointer g and so likewise with two hundred yards and allthe other ranges. Now, in this rotation of the disk, the small pin 9 ofthe spring arm clicking successively in the small sockets h on the rimof the disk, gives positive assurance of the perfect adjustment of thesight to the range intended, without even the necessity of looking atthe face of the disk.

In some cases, if the stem 0 ought not, for

the particular gun, come down to its full limit, it is then necessaryonly to loosen the screw I and turn the washer G slightly, so that itsspring finger g will move slightly to one side, whereupon the stop pin Hof the disk, upon returning, will comein contact with the spring fingersooner, and will thereby limit the downward movement of the stem to theproper initial position. This arrangement of the operating pinion uponthe face of the standard is advantageous in providing for the mostconvenient operation of the sight by the finger or thumb of the gunnerwithout having to remove his hand from position on the stock. It is alsoadvantageous in presenting to his sight the accurate adjustments to theseveral ranges.

The small sightd usually found within the socketed back of the mainsight D is in my device hinged in the usual manner, but instead ofhaving its finger-piece below where it is extremely inconvenient, Iplace it at the top, as shown at d, and adapt it to enter a small notchin the top of the main sight, and to project above said sight whereby itis easy with the finger nail to throw it down out of the way, or returnit to position in the main sight.

This construction of the sight, it will be seen, enables the stem tohave the maximum length and the greatest amount of movement 4 for thenumber of ranges.

Another decided advantage is the quickness with which the sight may beraised or lowered, thus presenting a marked improvement over those formsin which the adj ustment is effected by a screw, and in the use of whichscrew, on account of its slow action, the necessity for adj ustmentoften passes before the movement is effected.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A sight for fire-arms consisting of a barrel open at both ends andpivotally mounted at its lower so that it may be raised and lowered, astem fitted therein throughout the length of the barrel having at itsupper end a sight aperture, and on its face a series of teeth, a diskpivoted upon the bearing plate of the barrel and having its rear faceprovided with teeth adapted to engage the teeth on the stem, said diskhaving an annular exposed series of markings or graduations, and apointer fixed upon the pivotal center of the disk, substantially asherein described.

2. A sight for fire-arms consisting of a base plate adapted to besecured to the gun, ahollow standard pivotally mounted upon the sameupon pivots which enter the barrel partially whereby the center cavityof the latter is left clear for the movement of the stem, a

sight stem slidable throughout the barrel and having its face providedwith teeth, a d sk pivoted upon the face of the barrel havlng its frontface graduated in annular series and its rear face provided with teethadapted to engage the teeth on the stem, and a pointer fixedly securedover the outer face of the disk.

In a sight for fire-arms, a hinged hollow barrel open throughout itslength having the upper portion of its front face cut-away, a stemslidable within the barrel having teeth adapted to project through thecut-away portion of the barrel, a disk mounted to turn on the barrelhaving teeth on its rear face entering the cut-away portion of thebarrel to engage the teeth on the stem, and a pointer over the exteriorface of the disk and provided with means engaging said disk to indicatethe adjustment of the disk, substantially as herein described.

4. In a sight for fire arms, the combination of a pivotally mountedhollow standard or barrel, a vertically movable sight stem therein, arotary disk having markings around the periphery of its outer facedenoting the several ranges, and having devices on its rear faceengaging the stem to adjust it, and a fixed pointer, substantially asherein described.

5. In a sight for fire-arms having a standard or barrel and verticallyadjustable sight stem, a graduated disk on the barrel having a series ofsockets corresponding to the graduations, and a pointer having a springfinger adapted to successively click into the sockets to indicate theadjustment of the disk.

6. In a sight for fire-arms, the combination of a hollow standard orbarrel, a vertically movable sight stem fitted thereto and having arack, a rotatable pinion disk on the front of the standard and engagingthe rack of the sight stem, said pinion having on its face, markings orgraduations representing the several ranges, and an annular series ofsmall sockets corresponding to said markings, and the fixed springfinger with its pin, on the face of the pinion disk and successivelyclicking into the sockets, substantially as herein described.

7. In a sight for fire-arms, the combination of a hollow standard orbarrel, a vertically movable sight stem fitted thereto and having arack, a rotatable pinion disk on the front of the standard and engagingthe rack of the sight stem, said pinion having on its face, markings orgraduations representing the several ranges, and an annular series ofsmall sockets corresponding to said markings, and the washer on the faceof the disk, having a pointer and a spring finger with its pinsuccessively clicking into the sockets,'substantially as hereindescribed.

8. In a sight for fire-arms, the combination of a hollow standard orbarrel, a vertically movable sight stem fitted thereto and having IIO arack, a rotatable pinion diskon the front of the standard and engagingthe rack of the sight stem, said pinion having on its face markings orgraduations representing the several ranges, and an annular series ofsmall sockets corresponding to said markings, the adjustable washer onthe face of the disk having a pointer and a spring finger with a pinsuccessively clicking intot-he sockets, and

a stop pin on the pinion disk adapted to come 10 in contact with thespring finger, substantially as herein described. I

In witness whereof I have hereunto set my hand.

I to FREDERICK W. DOBBEL.

Witnesses: I

S. H. NoURsE, J. A. BAYLESS.

